Williamson Value property tax analysis

857 Whitetail Dr, Round Rock, TX 78681

3 bed / 2 bath, 1,963 sqft, built 2020, in G799514C - Mayfield Ranch Appraised at $437,465 for 2026.

Williamson County account 405034

Appraised value
$437,465
Tax year 2026
Market value
$437,465
Living area
1,963 sqft
$223 per sqft
Year built
2020

Why this page matters for a protest

A strong tax protest page needs the county value, property facts, and enough context to compare this home with similar properties nearby. This page gives homeowners a starting point before reviewing comparable homes and prior-year changes.

The county value changed -5.4% from $462,246 in 2025 to $437,465 in 2026.